Return all attacking creatures to their owner's hand.

Equipped creature gets +6/+6. Whenever equipped creature attacks, destroy target permanent. Equip {6}

Flying Whenever this creature deals combat damage to a player, destroy target nonland permanent of that player's choice that one of your opponents controls.

Gain control of target creature with mana value X or less. If X is 5 or more, create a token that's a copy of that creature.

Morph {5}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, each opponent skips their next untap step.

Morph {4}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, you may exchange control of target creature you control and target creature an opponent controls.

Choose one — • Look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard. • Counter target spell unless its controller pays {4}.

Choose two — • Counter target spell. • Return target permanent to its owner's hand. • Tap all creatures your opponents control. • Draw a card.

Each creature your opponents control is an Illusion in addition to its other types and has "When this creature becomes the target of a spell or ability, sacrifice it."

Creatures your opponents control have base power and toughness 0/1 until end of turn.

When this creature enters, return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control.

Return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control. Foretell {1}{U}{U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Flying Lightning Breath — When this creature enters, until your next turn, target creature an opponent controls gets -3/-0, up to one other target creature gets -2/-0, and up to one other target creature gets -1/-0.

Spells your opponents cast cost {2} more to cast. At the beginning of your end step, each opponent loses 1 life.

Body of Knowledge's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. Whenever this creature is dealt damage, draw that many cards.

Draw a card for each tapped creature target opponent controls.

{T}: Target player draws two cards, then discards two cards.

When this enchantment enters, draw a card. Whenever a land an opponent controls enters, if that player had another land enter the battlefield under their control this turn, they return a land they control to its owner's hand.

Flying Whenever an opponent draws a card, you may draw two cards.

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.) Draw a card.

Flying As an additional cost to cast blue permanent spells, you may pay 2 life. Those spells cost {U} less to cast if you paid life this way. This effect reduces only the amount of blue mana you pay. Whenever you cast a blue permanent spell, draw a card.

Draw cards equal to the number of cards in your library, then put a card from your hand on top of your library. You have no maximum hand size until your next turn.

If you would draw a card while your library has no cards in it, you win the game instead. +1: Target player mills two cards. Draw a card. −8: Draw seven cards. Then if your library has no cards in it, you win the game.

Look at the top three cards of your library, then put them back in any order. You may shuffle. Draw a card.

When Proft's Eidetic Memory enters, draw a card. You have no maximum hand size. At the beginning of combat on your turn, if you've drawn more than one card this turn, put X +1/+1 counters on target creature you control, where X is the number of cards you've drawn this turn minus one.

Flying Sturmgeist's power and toughness are each equal to the number of cards in your hand. Whenever this creature deals combat damage to a player, draw a card.

At the beginning of your upkeep, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") {T}, Sacrifice three Clues: Search your library for a card, put that card into your hand, then shuffle.

If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

+1: Create a 1/1 colorless Thopter artifact creature token with flying. 0: Draw a card. If you control three or more artifacts, draw two cards instead. −9: You get an emblem with "At the beginning of your end step, search your library for a permanent card, put it onto the battlefield, then shuffle."

Target player mills two cards. Draw a card.

You have no maximum hand size. At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game. {3}{U}: Draw a card.

Draw a card. If a graveyard has twenty or more cards in it, draw three cards instead.

Callaphe's power is equal to your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) Creatures and enchantments you control have "Spells your opponents cast that target this permanent cost {1} more to cast."

Flying Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."

Search target opponent's library for an artifact card and put that card onto the battlefield under your control. Then that player shuffles.

{T}: Gain control of target creature with power less than or equal to the number of creatures you control.

For each opponent, gain control of target permanent that player controls.

{T}: Add {C}. {1}, {T}: Until end of turn, creatures your opponents control lose hexproof and shroud and can't have hexproof or shroud.

This land enters tapped unless you control an Island. {T}: Add {U}. {2}{U}{U}, {T}: Scry 2.

({T}: Add {U}.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

{T}: Add one mana of any color in your commander's color identity.

You have no maximum hand size. {T}: Add one mana of any color.

Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}.

Blue creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

You may cast spells from your hand without paying their mana costs.

Blue spells you cast cost {1} less to cast.

{T}: Add {U}.

This artifact enters tapped. {T}: Add {U}.

You have no maximum hand size. {T}: Add {C}.

Whenever you draw your second card each turn, create a 2/2 blue Drake creature token with flying. Whenever you draw your fifth card each turn, Alandra and Drakes you control each get +X/+X until end of turn, where X is the number of cards in your hand.

Whenever you draw a card, put a +1/+1 counter on this creature. When this creature dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on this creature. (They can't be blocked as long as defending player controls an Island.)

Flash When this creature enters, each token that would be created under an opponent's control this turn is created under your control instead.

Whenever you draw a card, you may pay {1}. If you do, put a +1/+1 counter on this creature and create a 1/1 blue Tentacle creature token.